In this thesis, we investigate the OTDR on-line monitoring feasibility of forward- and backward-pumping distributed Raman fiber amplifiers (FRAs) transmission systems with different OTDR probe lights. In the experiments, we choose the large effect area fiber ( LEAF ) with 50 km long as gain medium of Raman amplifiers. Two different OTDR probe lights with 1.31£gm and 1.65£gm wavelengths are separately used for on-line monitoring forward- and backward-pumping distributed FRAs. We find that the OTDR probe lights affect the optical gain of the 1.55 mm data signal.
In the experiments, for the forward-pumping scheme using 1.3£gm OTDR probe light on-line monitor, the optical gain of the 1.55 mm data signal increases 0.2 dB, but for the backward-pumping scheme, that only increases 0.1 dB. In the forward-pumping scheme using 1.65£gm OTDR probe light on-line monitor, the optical gain of the 1.55 mm data signal decreases 0.6 dB, but for the backward-pumping scheme, that only decreases 0.2 dB. We also find the OTDR on-line monitoring distribution fiber Raman amplifiers Systems makes OTDR traces distortion.
In an aspect of system BER performance, the system power penalty on account of the OTDR monitoring in both 10 Gb/s forward- and backward-pumping schemes is trivial¡@. In the forward-pumping scheme using 1.3£gm OTDR probe light on-line monitor, the power penalty is about 0.1 dB, but for the backward-pumping scheme that is about 0.05 dB. As the forward-pumping scheme using 1.65£gm OTDR probe light, the power penalty is about 0.2 dB, but for the backward-pumping scheme that is about 0.07 dB.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0616103-181800 |
| Date | 16 June 2003 |
| Creators | Chen, Chien-Cun |
| Contributors | Yi-Jen Chiu, Kai-Ming Feng, Yung-Kuang Chen, Sheng-Lung Huang, Tsair-Chun Liang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0616103-181800 |
| Rights | withheld, Copyright information available at source archive |
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